Other operations you may need to do with Solid
Move some entry level fields up (out of the senses, up to the entry level)
Delete empty fields. (You have to enumerate all the ones you want to *keep*, so this can be a little tedious.)
Experiment with different settings for some fields, so you can discover their behavior. For instance,
Tell Solid that a field can occur only once; you will discover if it ever appears twice.
Say that a field is required. You will find out if it is ever missing.
Make a sibling a child of the marker it seems to always occur after. You will find out if they always occur in the same order. (For instance, if you have both \ge and \gn, it is helpful to know if they always occur in the same order. If you make \gn a child of \ge, you will find the places it comes before \ge.
Markers/Data Shape Inventory: shows all possible sequences of markers that occur before or after a specified marker. For instance, if you want to know if gn always follows ge, you could use this command and set the "radius" to "1".
Markers/Data Value Inventory: shows all possible contents of one or more markers (useful for fields that might be list items)